For flow over a flat plate, the ratio of thermal boundary layer thickness, 'xt' and hydrodynamic boundary layer thickness 'x' is equal to (where, NPr = Prandtl number)

Heat Transfer
For flow over a flat plate, the ratio of thermal boundary layer thickness, 'xt' and hydrodynamic boundary layer thickness 'x' is equal to (where, NPr = Prandtl number)

NPr

NPr-1/3

NPr1/3

NPr-1

NPr

NPr-1/3

NPr1/3

NPr-1

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Heat Transfer
A graph between __________ is called Wilson plot.

1/U Vs . 1/V

1/U Vs . 1/v0.8

1/v0.8 Vs . U

V0.8 Vs . U

1/U Vs . 1/V

1/U Vs . 1/v0.8

1/v0.8 Vs . U

V0.8 Vs . U

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Heat Transfer
Steam condensate is recovered by steam traps and recycled for use as boiler feed water, because of its low

Dissolved soilds content

Suspended solids content

Hardness

All of these

Dissolved soilds content

Suspended solids content

Hardness

All of these

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Heat Transfer
In a backward feed multiple effect evaporator

Feed flows from low pressure to high pressure

Feed is introduced in the first effect

No pumps are required between successive effects

None of these

Feed flows from low pressure to high pressure

Feed is introduced in the first effect

No pumps are required between successive effects

None of these

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Heat Transfer
Extended heat transfer surface like fins are used to increase the heat transfer rate. Fin efficiency is defined as the ratio of heat transferred across the fin surface to the theoretical heat transfer across an equal area held at the

Temperature of the fin end

Surrounding temperature

Constant temperature equal to that of the base

Average temperature of the fin

Temperature of the fin end

Surrounding temperature

Constant temperature equal to that of the base

Average temperature of the fin

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Heat Transfer
For a fluid flowing in an annulus space, the wetted perimeter for heat transfer and pressure drop are

Linearly related

Never different

Different

Same

Linearly related

Never different

Different

Same

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Heat Transfer

Heat Transfer For flow over a flat plate, the ratio of thermal boundary layer thickness, 'xt' and hydrodynamic boundary layer thickness 'x' is equal to (where, NPr = Prandtl number)

Heat Transfer A graph between __________ is called Wilson plot.

Heat Transfer Steam condensate is recovered by steam traps and recycled for use as boiler feed water, because of its low

Heat Transfer In a backward feed multiple effect evaporator

Heat Transfer Extended heat transfer surface like fins are used to increase the heat transfer rate. Fin efficiency is defined as the ratio of heat transferred across the fin surface to the theoretical heat transfer across an equal area held at the

Heat Transfer For a fluid flowing in an annulus space, the wetted perimeter for heat transfer and pressure drop are

Heat Transfer
For flow over a flat plate, the ratio of thermal boundary layer thickness, 'xt' and hydrodynamic boundary layer thickness 'x' is equal to (where, NPr = Prandtl number)

Heat Transfer
A graph between __________ is called Wilson plot.

Heat Transfer
Steam condensate is recovered by steam traps and recycled for use as boiler feed water, because of its low

Heat Transfer
In a backward feed multiple effect evaporator

Heat Transfer
Extended heat transfer surface like fins are used to increase the heat transfer rate. Fin efficiency is defined as the ratio of heat transferred across the fin surface to the theoretical heat transfer across an equal area held at the

Heat Transfer
For a fluid flowing in an annulus space, the wetted perimeter for heat transfer and pressure drop are